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3 1/2 inch length Machine Screws (ASME B18. 6.3)
Machine Screws are uniformly threaded screws which are designed to be screwed into pre-drilled, pre-threaded holes, or in conjunction with a nut, usually with a diameter less than 1/4inch. Larger diameter machine screws with a hex head are usually referred to as machine bolts.
96 results, (click on any line for more information)
| Search Results Sponsored by ISSCO, Inc., your source for Machine Screws. For more results, visit isscoinc.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Buy Machine Screws from one of our FCH Network Members | ||||||||
| Irwin Ind | Ont | Machine Screw | Steel | Zinc/Clear | #6-32 x 3 1/2 | 6-32x3-1/2 pan phillips m/screw steel zinc triv clear b18.6.3 | 900 |
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| GLF | OH | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20x3-1/2 phil flat m/s stl zc b18.6.3 () () () | 100 |
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| GLF | OH | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20x3-1/2 phil round m/s stl zc b18.6.3 () () () | 580 |
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| GLF | OH | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 1/2 | 1/4-20x3-1/2 phil flat m/s 18-8 s/s b18.6.3 () () () | 30 |
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| GLF | OH | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | #10-24x3-1/2 phil truss m/s stl zc b18.6.3 () () () | 106 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | 10-24 x 3 1/2 p-flat m/s stl znc b18.6.3 | 797 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | 10-24 x 3 1/2 p-pan m/s stl znc b18.6.3 | 2191 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3 1/2 | 10-32 x 3 1/2 p-flat m/s s/s b18.6.3 | 7 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 p-flat m/s s/s b18.6.3 | 225 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 p-flat m/s stl znc b18.6.3 | 755 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 p-pan m/s s/s b18.6.3 | 44 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 p-truss m/s stl znc b18.6.3 | 460 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 5/16-18 x 3 1/2 p-flat m/s s/s b18.6.3 | 3 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 p-flat m/s s/s b18.6.3 | 20 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 phil pan machine screw s/s b18.6.3 | 50 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #6-32 x 3 1/2 | 6-32 x 3 1/2 p-flat m/s stl znc b18.6.3 | 1850 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-32 x 3 1/2 | 8-32 x 3 1/2 p-flat m/s s/s b18.6.3 | 100 |
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| Ababa | CA | Machine Screw | Steel | Black Oxide | #8-32 x 3 1/2 | 8-32 x 3 1/2 s-rnd m/s stl blk ox wax b18.6.3 | 1640 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #8-32 x 3 1/2 | 8-32 x 3 1/2 s-rnd m/s stl znc b18.6.3 | 1900 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | #8-32 x 3 1/2 | 8-32 x 3 1/2 p-flat m-scr s/s blk ox wax b18.6.3 | 527 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #8-32 x 3 1/2 | 8-32 x 3 1/2 p-pan m/s stl znc b18.6.3 | 600 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3 1/2 | 10-24 x 3 1/2 p-flat m/s s/s b18.6.3 | 133 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | (ft) coarse slotted truss low carb zp b18.6.3 | 700 |
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| ASMC | IL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | (ft) coarse phil pan low carb zp b18.6.3 | 98 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | 10-24 x 3 1/2 p-flat m/s stl znc b18.6.3 | 500 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | 10-24 x 3 1/2 p-pan m/s stl znc b18.6.3 | 400 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3 1/2 | 10-32 x 3 1/2 p-pan mach screw s/s b18.6.3 | 125 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #10-32 x 3 1/2 | 10-32 x 3 1/2 s-rnd m/s stl znc b18.6.3 | 94 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 p-flat m/s s/s b18.6.3 | 75 |
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| Ababa | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 phil pan machine screw s/s b18.6.3 | 20 |
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| Ababa | CA | Machine Screw | Steel | Zinc/Clear | #6-32 x 3 1/2 | 6-32 x 3 1/2 p-flat m/s stl znc b18.6.3 | 50 |
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| SII | IN | Machine Screw | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16 x 3-1/2 zinc flat head machine screw) b18.6.3 | 375 |
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| SII | IN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3-1/2 phillips flat head zinc machine screw b18.6.3 | 700 |
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| Wink Fast | VA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3 1/2 | 18.8 (a2) 18-8 304 steel phil pan m/s 10-32 unf x3-1/2 dimensionally per asme b18.6.3 | 199 |
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| JET FITTING | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20x3 1/2 phillips flat ms stl zinc 586683 b18.6.3 | 350 |
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| JET FITTING | CA | Machine Screw | Steel | Black Oxide | 1/4-20 x 3 1/2 | 1/4-20x3-1/2 phillips pan machine screw steel black oxide 416C56PPMS SBO b18.6.3 | 110 |
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| JET FITTING | CA | Machine Screw | Steel | Plain | #8-32 x 3 1/2 | #8-32x3-1/2 ms pan phillips stl zi 587381 b18.6.3 | 1238 |
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| JET FITTING | CA | Machine Screw | Steel | Plain | 1/4-20 x 3 1/2 | 1/4-20x3 1/2 phillips pn ms stl zi 587681 b18.6.3 | 2790 |
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| JET FITTING | CA | Machine Screw | Steel | Plain | #10-24 x 3 1/2 | #10-24x3 1/2 ms round sltzn 583483 b18.6.3 | 1349 |
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| JET FITTING | CA | Machine Screw | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16x3 1/2 ms round phillips zn 588771 b18.6.3 | 100 |
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| Standard | MA | Machine Screw | Silicon Bronze | Plain | 1/2-13 x 3 1/2 | 1/2-13x3-1/2 slotted flat head machine screw silicon bronze b18.6.3 | 1138 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 phillips round head machine screw 18-8 stainless steel b18.6.3 | 3649 |
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| Standard | MA | Machine Screw | Brass | Plain | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 slotted round head machine screw brass b18.6.3 | 1051 |
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| Standard | MA | Machine Screw | Brass | Plain | 1/4-20 x 3 1/2 | 1/4-20x3-1/2 slotted flat head machine screw brass b18.6.3 | 1420 |
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| Standard | MA | Machine Screw | Silicon Bronze | Plain | 3/8-16 x 3 1/2 | 3/8-16x3-1/2 slotted flat head machine screw silicon bronze b18.6.3 | 790 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 phillips oval head machine screw 18-8 stainless steel b18.6.3 | 2900 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 1/2 | 1/4-20x3-1/2 phillips oval head machine screw 18-8 stainless steel b18.6.3 | 4350 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3 1/2 | 3/8-16x3-1/2 phillips pan head machine screw 18-8 stainless steel b18.6.3 | 2150 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3 1/2 | 10-24x3-1/2 phillips oval head machine screw 18-8 stainless steel b18.6.3 | -2828 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 slotted round head machine screw 18-8 stainless steel b18.6.3 | 162 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3 1/2 | 10-32x3-1/2 slotted round head machine screw 18-8 stainless steel b18.6.3 | -683 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3 1/2 | 3/8-16x3-1/2 slotted round head machine screw 18-8 stainless steel b18.6.3 | 67 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3 1/2 | 10-24x3-1/2 slotted round head machine screw 18-8 stainless steel b18.6.3 | 183 |
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| Standard | MA | Machine Screw | Silicon Bronze | Plain | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 slotted flat head machine screw silicon bronze b18.6.3 | 990 |
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| Standard | MA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 1/2 | 1/4-20x3-1/2 phillips pan head machine screw 18-8 stainless steel b18.6.3 | 6140 |
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| QFC | TX | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20x3 1/2 phil flat m/s zinc b18.6.3 | 200 |
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| QFC | TX | Machine Screw | Steel | Zinc/Clear | #6-32 x 3 1/2 | 6-32x3 1/2 slotted round m/s zinc b18.6.3 | 2015 |
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| QFC | TX | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18x3 1/2 phil flat m/s zinc b18.6.3 | 200 |
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| B & K FAST | PA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 phil pan machine screws zinc b18.6.3 | 105 |
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| B & K FAST | PA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8 x 3 1/2 | #8 x 3 1/2 phil pan s m s 18-8 stainless b18.6.3 | 44 |
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| OSSCO | RI | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20x3 1/2 phil flat m/s plated b18.6.3 | 577 |
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| OSSCO | RI | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20x3 1/2 phil round m/s plated b18.6.3 | 75 |
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| OSSCO | RI | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18x3 1/2 slotted flat m/s plated b18.6.3 | 188 |
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| OSSCO | RI | Machine Screw | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16x3 1/2 slotted round m/s plated b18.6.3 | 50 |
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| JET FITTING | CA | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | machine screw round slotted 1024x3-1/2 steel zinc b18.6.3 | 900 |
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| JET FITTING | CA | Machine Screw | Steel | Zinc/Clear | #8-32 x 3 1/2 | machine screw pan phillips 832x3-1/2 steel zinc fully threaded b18.6.3 | 174 |
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| JET FITTING | CA | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | machine screw flat phillips 1/4-20x3-1/2 steel zinc plated b18.6.3 | 600 |
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| NBS | IL | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | #10-24 x 3-1/2 phillips pan head machine screw zinc b18.6.3 | 75 |
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| NBS | IL | Machine Screw | Steel | Zinc/Clear | #10-32 x 3 1/2 | #10-32 x 3-1/2 phillips pan head machine screw zinc b18.6.3 | 62.5 |
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| NBS | IL | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | #10-24 x 3-1/2 slot or combo round head machine screw zinc b18.6.3 | 145.57 |
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| JET FITTING | CA | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3 1/2 | machine screw flat100 slotted 1032x3-1/2 stainless steel b18.6.3 | 100 |
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| THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #8-32 x 3 1/2 | slotted round m/s b18.6.3 | 1,682 |
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| THRDFAST | FL | Machine Screw | Brass | Plain | 1/4-20 x 3 1/2 | slotted round m/s b18.6.3 | 488 |
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| THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | phil flat m/s b18.6.3 | 353 |
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| THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | slotted flat m/s b18.6.3 | 165 |
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| THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | phil pan m/s b18.6.3 | 130 |
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| THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 18-8 ss slotted round m/s b18.6.3 | 32 |
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| THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | slotted flat m/s b18.6.3 | 12 |
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| THRDFAST | FL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | slotted round m/s b18.6.3 | 12 |
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| THRDFAST | FL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 18-8 ss slotted flat m/s b18.6.3 | 3 |
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| THRDFAST | TN | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | phil flat m/s b18.6.3 | 30 |
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| KBS | TN | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3 1/2 | 10-24 x 3 1/2 phil oval m/s s/s b18.6.3 | 99,681 |
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| KBS | TN | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 phil pan m/s pltd b18.6.3 | 9,380 |
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| THRDFAST | AL | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | slotted hex washer m/s b18.6.3 | 75 |
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| THRDFAST | AL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 18-8 ss slotted round m/s b18.6.3 | 12 |
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| THRDFAST | AL | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | slotted round m/s b18.6.3 | 192 |
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| THRDFAST | MS | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 1/2 | 18-8 ss phil oval m/s b18.6.3 | 10 |
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| THRDFAST | MS | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 3 1/2 | 18-8 ss slotted flat m/s b18.6.3 | 10 |
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| THRDFAST | MS | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 18-8 ss slotted flat m/s b18.6.3 | 89 |
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| THRDFAST | AL | Machine Screw | Steel | Zinc/Clear | #10-24 x 3 1/2 | slotted flat m/s b18.6.3 | 18 |
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| THRDFAST | AL | Machine Screw | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | slotted round m/s b18.6.3 | 87 |
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| THRDFAST | AL | Machine Screw | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | slotted round m/s b18.6.3 | 35 |
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| THRDFAST | AL | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3 1/2 | 18-8 ss slotted oval m/s b18.6.3 | 9 |
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| WSB | KY | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-32 x 3 1/2 | screw ms pn (18-8) ph 8-32x3 1/2 b18.6.3 | 4,900 |
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| WSB | KY | Machine Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3 1/2 | screw ms pn (18-8) ph 10-32x3 1/2 b18.6.3 | 4,625 |
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| All Size | TX | Machine Screw | Steel | Plain | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 flat phillip machine screw b18.6.3 | 303 |
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